Kuwait had been plagued by a large number of sandstorms this year. I remember 2003 when military activity in the north of the tiny Gulf state was made responsible for numerous sandstorms which occurred from April through June. They usually develop when large amounts of cold air moves across dry ground, which is covered by loose sand or salt. They inevitably impair quality of air and may cause asthma attacks or even bronchitis and conjunctivitis. Even the immune defense might be affected.